09b852b1d8
Examples are usually a good way to get to know a new codebase, do not teach developers who are new to Qt about the 3-arg connect() to begin with. Drive-by changes: - `this` can't be implicitly captured with [=] in a lambda, instead capture by reference - Update docs related to the sqlbrowser example; the overloaded signal it mentions has been removed in Qt6 - In the sqlbrowser example, rename addConnection() (no-arg) overload to openNewConnectionDialog, suggested in code review Change-Id: I30c9f35bda4ac2f460d767ab7f84422ae3ed09f7 Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
93 lines
3.0 KiB
C++
93 lines
3.0 KiB
C++
// Copyright (C) 2021 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include "../shared/subscriptionwindow.h"
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#include "subscription.h"
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#include "user.h"
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#include <QApplication>
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#include <QButtonGroup>
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#include <QLabel>
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#include <QPushButton>
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#include <QRadioButton>
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#include <QSpinBox>
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int main(int argc, char *argv[])
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{
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QApplication a(argc, argv);
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//! [init]
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User user;
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Subscription subscription(&user);
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//! [init]
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SubscriptionWindow w;
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// Initialize subscription data
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QRadioButton *monthly = w.findChild<QRadioButton *>("btnMonthly");
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QObject::connect(monthly, &QRadioButton::clicked, &subscription, [&] {
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subscription.setDuration(Subscription::Monthly);
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});
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QRadioButton *quarterly = w.findChild<QRadioButton *>("btnQuarterly");
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QObject::connect(quarterly, &QRadioButton::clicked, &subscription, [&] {
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subscription.setDuration(Subscription::Quarterly);
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});
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QRadioButton *yearly = w.findChild<QRadioButton *>("btnYearly");
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QObject::connect(yearly, &QRadioButton::clicked, &subscription, [&] {
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subscription.setDuration(Subscription::Yearly);
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});
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// Initialize user data
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QPushButton *germany = w.findChild<QPushButton *>("btnGermany");
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QObject::connect(germany, &QPushButton::clicked, &user, [&] {
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user.setCountry(User::Country::Germany);
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});
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QPushButton *finland = w.findChild<QPushButton *>("btnFinland");
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QObject::connect(finland, &QPushButton::clicked, &user, [&] {
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user.setCountry(User::Country::Finland);
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});
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QPushButton *norway = w.findChild<QPushButton *>("btnNorway");
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QObject::connect(norway, &QPushButton::clicked, &user, [&] {
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user.setCountry(User::Country::Norway);
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});
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QSpinBox *ageSpinBox = w.findChild<QSpinBox *>("ageSpinBox");
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QObject::connect(ageSpinBox, &QSpinBox::valueChanged, &user, [&](int value) {
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user.setAge(value);
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});
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// Initialize price data
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QLabel *priceDisplay = w.findChild<QLabel *>("priceDisplay");
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priceDisplay->setText(QString::number(subscription.price()));
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priceDisplay->setEnabled(subscription.isValid());
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// Track the price changes
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//! [connect-price-changed]
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QObject::connect(&subscription, &Subscription::priceChanged, priceDisplay, [&] {
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QLocale lc{QLocale::AnyLanguage, user.country()};
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priceDisplay->setText(lc.toCurrencyString(subscription.price() / subscription.duration()));
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});
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//! [connect-price-changed]
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//! [connect-validity-changed]
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QObject::connect(&subscription, &Subscription::isValidChanged, priceDisplay, [&] {
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priceDisplay->setEnabled(subscription.isValid());
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});
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//! [connect-validity-changed]
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//! [connect-user]
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QObject::connect(&user, &User::countryChanged, &subscription, [&] {
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subscription.calculatePrice();
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subscription.updateValidity();
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});
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QObject::connect(&user, &User::ageChanged, &subscription, [&] {
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subscription.updateValidity();
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});
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//! [connect-user]
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w.show();
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return a.exec();
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}
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